Woolworth — who’s based in Tennessee and has also planned mega-events for the NFL and CMA Awards for up to 15,000 people — has been hired for the wedding of “The Voice” co-stars, who began dating last year after each going through a high-profile breakup, TMZ reported Friday.

Earlier this week, reports said an engagement could be imminent: A source told People that while Shelton has not yet popped the question, “Everyone is expecting it to happen at some point, though.”

But apparently things are moving more quickly! When Page Six reached wedding planner Woolworth early Friday, she had no idea that a story about her part in the alleged nuptials had leaked online. A nervous-sounding Woolworth told us she could not confirm any details.

Then again, it’s not uncommon for celebrity wedding and events planners to sign non-disclosure agreements. Vendors and even guests had to sign confidentiality agreements for the 2014 wedding of Dwyane Wade and Gabrielle Union, and Kim Kardashian and Kanye West also reportedly required the agreements and banned cellphones from their blessed event.

Beyond weddings, workers at a Justin Bieber “Gatsby” party in 2013 reportedly had to sign a confidentiality contract that would leave them on the hook for $3 million if they violated it by spilling the beans on any details.

Woolworth has said that her events provide “multifaceted celebrity security” for celebs and their VIP guests, and also that “Woolworth thinks big . . . no, HUGE.” So don’t expect subtle!